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Top community discussions about FITS Preview

FITS Preview is a lightweight and fast viewer for images in FITS format (Flexible Image Transport System) introduced by NASA and HEASARC.

In comparison with any full feature FITS editor, it offers unbeatable overall speed and ease of use. Just double-click on any FITS image in any folder and the FITS Preview application will open it in a fraction of second, automatically sized to fit the window, automatically stretched to the optimal brightness, and flipped or rotated. Scale, black point, and white point can be adjusted manually afterwards using the corresponding buttons in toolbar. You can return to the automatic

What's New in FITS Preview

Version 2.4 (2.2):

Note: The downloadable demo is version 2.2; the version available for purchase on the Mac App Store is version 2.4.

  • ITS Preview now supports file names containing UTF-8 characters (with exception of "(", ")", "["and "]" with special meaning for FITSIO)

Requirements for FITS Preview

  • OS X 10.8 or later
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FITS Preview User Discussion

Current Version (2.x)
Downloads 560
Version Downloads 309
License Demo
Date 12 Dec 2018
Platform Intel 64 / OS X
Price $4.99
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